ASTM A972/A972M-00(2010)
(Specification)Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
Standard Specification for Fusion Bonded Epoxy-Coated Pipe Piles
ABSTRACT
This specification covers standard requirements for pipe piles with protective fusion-bonded epoxy powder coating applied by the electrostatic spray, flocking, or fluidized bed process. The surfaces of steel pipe piles to be coated shall be precleaned, as required. Steel surfaces shall be cleaned by abrasive blast cleaning to near-white metal. Prior to application of the fusion-bonded epoxy powder coatings, raised silvers, scabs, laps, sharp edges, or seams shall be removed using abrasive grinders. The powder coating shall be applied to cleaned steel surfaces before visible oxidation occurs. To achieve the required coating thickness, the steel shall be preheated prior to applying the powder coating. The heat source shall not leave a residue or contaminant on the steel surfaces. If oxidation occurs, the steel shall be cooled to ambient temperature and recleaned before applying the powder coating. The steel pipe piles shall be tested and shall meet the requirements for coating thickness and coating continuity.
SCOPE
1.1 This specification covers pipe piles with protective fusion-bonded epoxy powder coating applied by the electrostatic spray, flocking, or fluidized bed process.
Note 1—The coating applicator is identified throughout this specification as the manufacturer.
1.2 Other organic coatings may be used provided they meet the requirements of this specification.
1.3 Requirements for the powder coating are contained in Annex A1.
1.4 This specification is applicable for orders in either SI units (as Specification A972M) or inch-pound units [as Specification A972]. The values stated in either SI or inch-pound units are to be regarded as standard. Within the text, the inch-pound units are shown in brackets.
1.5 The following precautionary statement refers to the test method portion only, Section 8, of this standard: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A972/A972M −00(Reapproved 2010)
Standard Specification for
Fusion Bonded Epoxy-Coated Pipe Piles
This standard is issued under the fixed designationA972/A972M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope G12 Test Method for Nondestructive Measurement of Film
Thickness of Pipeline Coatings on Steel
1.1 This specification covers pipe piles with protective
G14 TestMethodforImpactResistanceofPipelineCoatings
fusion-bonded epoxy powder coating applied by the electro-
(Falling Weight Test)
static spray, flocking, or fluidized bed process.
G20 Test Method for Chemical Resistance of Pipeline Coat-
NOTE 1—The coating applicator is identified throughout this specifica-
ings
tion as the manufacturer.
2.2 American Petroleum Institute Specification:
1.2 Other organic coatings may be used provided they meet
API RP 5L7 Recommended Practice for Internal Fusion-
the requirements of this specification.
Bonded Epoxy Coating of Line Pipe
2.3 National Association of Corrosion Engineers Stan-
1.3 Requirements for the powder coating are contained in
dards:
Annex A1.
TM0175 Visual Standard for Surfaces of New Steel Cen-
1.4 This specification is applicable for orders in either SI
trifugally Blast Cleaned with Steel Shot or Steel Grit
units (as Specification A972M) or inch-pound units [as Speci-
(NACE No. 2)
fication A972]. The values stated in either SI or inch-pound
RP0490 Holiday Detection of Fusion-Bonded Epoxy Exter-
units are to be regarded as standard. Within the text, the
nal Pipeline Coatings of 250 to 750 µm (10 to 30 mils)
inch-pound units are shown in brackets. 5
2.4 Steel Structures Painting Council Standards:
1.5 The following precautionary statement refers to the test
SSPC VIS 1 Visual Standards
method portion only, Section 8, of this standard:This standard
SSPC-SP1 Surface Preparation Specification No. 1: Solvent
does not purport to address all of the safety concerns, if any,
Cleaning
associated with its use. It is the responsibility of the user of this
SSPC-SP10 Near White Blast Cleaning
standard to establish appropriate safety and health practices
3. Ordering Information
and determine the applicability of regulatory limitations prior
to use.
3.1 Orders for pipe piles under this specification may
include the following information:
2. Referenced Documents
3.1.1 Specification for designation and year of issue,
3.1.2 Size (pipe pile outside diameter and nominal wall
2.1 ASTM Standards:
thickness),
A252 Specification for Welded and Seamless Steel Pipe
3.1.3 Quantity.
Piles
3.1.4 Length,
B117 Practice for Operating Salt Spray (Fog) Apparatus
3.1.5 Portions to be coated (full length or distance from
D4060 Test Method for Abrasion Resistance of Organic
end),
Coatings by the Taber Abraser
3.1.6 Requirements for certifications (see 4.1 and 12.1),
G8 Test Methods for Cathodic Disbonding of Pipeline Coat-
3.1.7 Requirements for material samples (see 4.3),
ings
3.1.8 Requirements for patching material (see 4.4),
3.1.9 Requirements for visual standards for surface cleaning
1 comparison (see 5.1),
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is under the direct responsibility of 3.1.10 Requirements for test frequency (see 8.1, 8.2), and
Subcommittee A01.09 .
Current edition approved April 1, 2010. Published August 2010. Originally
approved in 1997. Last previous edition approved in 2004 as A972/ Available from American Petroleum Institute (API), 1220 L. St., NW,
A972M–00(2004). DOI: 10.1520/A0972_A0972M-00R10. Washington, DC 20005-4070, http://www.api.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from NACE International (NACE), 1440 South Creek Dr., Houston,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM TX 77084-4906, http://www.nace.org.
Standards volume information, refer to the standard’s Document Summary page on Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,
the ASTM website. Pittsburgh, PA 15222-4656, http://www.sspc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A972/A972M − 00 (2010)
3.1.11 Requirements for inspections at the manufacturing 6.3 The powder coating shall be applied and cured in
plant (see 10.1). accordance with the powder coating manufacturer’s written
recommendations.
4. Materials and Manufacture
6.4 Areas of pipe piles not requiring coating to allow for
4.1 Steel pipe piles to be coated shall meet the requirements welding or other purposes shall be specified by the purchaser
of Specification A252 as ordered.
and shall be blocked-out during the coating application.
NOTE 2—Surface conditions such as slivers, gouges, laminations, pits,
7. Requirements for Coated Pipe Piles
and sharp edges may cause coating application difficulties and effort
should be made to hold these conditions to a minimum.
7.1 Coating Thickness:
4.2 Thepowdercoatingshallmeettherequirementslistedin
7.1.1 The minimum coating thickness after curing on the
Annex A1 and shall be approved by the purchaser.
pipe piles shall be 300 µm [12 mils].
4.2.1 If specified in the order, a written certification shall be
7.1.2 Thecoatingthicknessshallbemeasuredinaccordance
furnished to the purchaser that properly identifies the supplied
with Test Method G12 following the instructions for calibra-
powder coating, batch designation of each batch used in the
tionanduserecommendedbythethicknessgagemanufacturer.
order, quantity represented, date of manufacture, name and
7.2 Coating Continuity:
address of manufacturer, and states that the powder coating,
7.2.1 Holiday detection shall be performed on each coated
meets the requirements of Annex A1.
pipe pile in accordance with NACE RP0490 or a 67.5 V direct
4.3 If specified in the order, a representative 0.2 kg [8 oz.]
current, 80-k Ω wet-sponge holiday detector in conjunction
samplefromeachbatchofthepowdercoatingshallbesupplied
with a wetting agent.
to the purchaser. The sample shall be packaged in an airtight
7.2.2 Holidays detected shall be patched in accordance with
container and identified by batch designation.
the patching material manufacturer’s written recommenda-
tions.
4.4 Patching material shall be compatible with the powder
coating and recommended by the manufacturer of the powder
8. Test Frequency
coating. If specified in the order, patching material shall be
supplied to the purchaser.
8.1 Measure the coating thickness on a minimum of every
th
10 pipe pile.
5. Surface Preparation
8.2 Testthecoatingcontinuityovertheentirecoatedsurface
5.1 Prior to blast cleaning, the surfaces of steel pipe piles to
of each pipe pile.
be coated shall be precleaned, as required, in accordance with
SSPC-SP1. Steel surfaces shall be cleaned by abrasive blast
9. Permissible Coating Damage and Repair of Damaged
cleaning to near-white metal in accordance with SSPC-SP10.
Coating
The cleaning media used shall produce an anchor pattern
9.1 Coating damage to pipe piles due to handling or other
profile of 38–100 µm [1.5–4.0 mils]. Either of the following
causes shall be repaired in the manufacturer’s plant with
visual standards of comparison shall be used to define the final
patching material prior to shipment.
surface condition: SSPC VIS 1 or NACE TM0175. Expended
blasting media debris and dust shall be removed from blasted
9.2 The areas of coating damage shall be prepared for the
surfaces prior to applying the powder coating. application of patching material by cleaning the damaged area,
removing the damaged coating using grinders or other suitable
5.2 Prior to application of the fusion-bonded epoxy powder
means, feathering the adjacent coating, and removing all
coating, raised slivers, scabs, laps, sharp edges, or seams shall
remaining residue or dust.
be removed using ab
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